6.1 Main Board
............................................................................23.
.....................................................................27.
..............................................................................28.
...........................................................................28.
......................................................................31.
...........................................................................32.
..................................................................33.
.........................................................................33.
..............................................................36.
......................................................................38.
.............................................................................40.
....................................................................................42.
.........................................................26.
..........................................................30.
......................................39.
3
IBM 15" Service Manual
..................................32.